I understand the view of most of the Hanbali scholars is against this, and i understand ibn Baz is not infallible and to the majority here, the Shafi' creed is not what they are upon.
However, in making it permissible and according to the Shafi' (Permissible, Valid, but Makruh) and permissible according to the Hanafis, are they essentially allowing what is basically Mutah, given that the man can intend to marry for a week, but not explicitly put it in the marriage contract and so they do not verbally and explicitly agree on it? Ibn Baz and other scholars, as well as the Shafi'is say it is permissible and only Makruh. In fact, others who claim it is Haram still affirm it is permissible and a valid contract.
"Getting married with the intention of divorce is a temporary marriage, and a temporary marriage is an invalid marriage, because it is mut’ah, and mut’ah is haraam by consensus. Valid marriage is where a man gets married with the intention of keeping his wife and staying with her if she proves to be a good wife and he gets along with her, otherwise he may divorce her. Allaah says (interpretation of the meaning): “either you retain her on reasonable terms or release her with kindness” [al-Baqarah 2:229].
And Allaah is the Source of strength. May Allaah send blessing and peace upon our Prophet Muhammad and his family and companions.
Shaykh ‘Abd al-‘Azeez ibn ‘Abd-Allaah Aal al-Shaykh, Shaykh ‘Abd-Allaah ibn Ghadyaan, Shaykh Saalih al-Fawzaan, Shaykh Bakr Abu Zayd. Fataawa al-Lajnah al-Daa’imah (18/448, 449).